TITLE: GCN CIRCULAR NUMBER: 42640 SUBJECT: GRB 251111A: KAIT optical upper limit DATE: 25/11/11 08:13:13 GMT FROM: Weikang Zheng at UC Berkeley <weikang@berkeley.edu> WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and Alexei V. Filippenko (UCB) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, automatically responded to the SVOM GRB 251111A (Cheng et al., GCN 42637) starting at 05:12:13, 115 seconds after the burst. Observations were performed in 3 x 3 tiling mode, and a set of clear (roughly R) filter images were obtained. The first image covered the reported afterglow (López-Cámara et al., GCN 42638; Wu et al., GCN 42639) position was at 05:14:50, 272 seconds after the burst. We did not detect the afterglow in our clear images with the following upper limit: mid t-t0(s) exp(s) UL(mag) --------------------------- 282 20 >18.5 561 20 >18.5 763 20 >18.5 1042 20 >18.5 1323 20 >18.5 1690 40 >19.0 2156 40 >19.0 2613 40 >19.0 3168 60 >19.5 3813 60 >19.5 4442 60 >19.5 View this GCN Circular online at https://gcn.nasa.gov/circulars/42640. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...